2102243317 has 2 divisors, whose sum is σ = 2102243318. Its totient is φ = 2102243316.

The previous prime is 2102243303. The next prime is 2102243323. The reversal of 2102243317 is 7133422012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1805060196 + 297183121 = 42486^2 + 17239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102243317 - 2¹¹ = 2102241269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102243291 and 2102243300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102243327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051121658 + 1051121659.

It is an arithmetic number, because the mean of its divisors is an integer number (1051121659).

Almost surely, 2^2102243317 is an apocalyptic number.

It is an amenable number.

2102243317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102243317 is an equidigital number, since it uses as much as digits as its factorization.

2102243317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 2102243317 is about 45850.2270114337. The cubic root of 2102243317 is about 1281.0349939850.

Adding to 2102243317 its reverse (7133422012), we get a palindrome (9235665329).

The spelling of 2102243317 in words is "two billion, one hundred two million, two hundred forty-three thousand, three hundred seventeen".